Citation
Abstract
This article presents results of studying noise-temperature contributions due to leakage through the holes on perforated panels of the 34-m beam-waveguide (BWG) and 70-m antennas at 32 GHz and above. The noise-temperature contributions for the 34-m BWG antenna were 0.4 K at 32 GHz and increased to about 6 K at 45 GHz. For the 70-m antenna, the noise-temperature contribution was 0.8 K at 32 GHz and increased to about 16.4 K at 47 GHz. The highest frequencies at which the antennas were free of grating lobes were 45 GHz for the 34-m BWG antenna and 47 GHz for the 70-m antenna. It is conventional practice not to use antennas at and above any frequency at which grating lobes are generated.
Keywords
DSN antenna noise temperatures
DSN antenna gain losses
Details
- Volume
- 42-151
- Published
- November 15, 2002
- Pages
- 1–17
- File Size
- 262.5 KB